Twenty20 Bowling in Each Season by George Worker
| Season | | Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ |
| 2008-09 | (New Zealand) | 72 | 0 | 121 | 2 | 1-30 | 60.50 | 0 | 0 | 36.00 | 10.08 |
| 2009-10 | (New Zealand) | 12 | 0 | 18 | 2 | 2-9 | 9.00 | 0 | 0 | 6.00 | 9.00 |
| 2010-11 | (New Zealand) | 42 | 0 | 40 | 4 | 3-18 | 10.00 | 0 | 0 | 10.50 | 5.71 |
| 2010-11 | (South Africa) | 78 | 0 | 98 | 1 | 1-21 | 98.00 | 0 | 0 | 78.00 | 7.53 |
| 2011-12 | (New Zealand) | 90 | 0 | 142 | 5 | 3-23 | 28.40 | 0 | 0 | 18.00 | 9.46 |
| 2012-13 | (New Zealand) | 24 | 0 | 39 | 0 | | | | | | 9.75 |
| 2013-14 | (New Zealand) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2014-15 | (New Zealand) | 24 | 0 | 28 | 0 | | | | | | 7.00 |
| 2015 | (Zimbabwe) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2015 | (South Africa) | 12 | 0 | 19 | 1 | 1-19 | 19.00 | 0 | 0 | 12.00 | 9.50 |
| 2015-16 | (New Zealand) | 114 | 1 | 144 | 7 | 5-10 | 20.57 | 0 | 1 | 16.28 | 7.57 |
| 2016-17 | (New Zealand) | 198 | 0 | 245 | 13 | 3-26 | 18.84 | 0 | 0 | 15.23 | 7.42 |
| 2017-18 | (New Zealand) | 30 | 0 | 60 | 1 | 1-23 | 60.00 | 0 | 0 | 30.00 | 12.00 |
| 2018-19 | (New Zealand) | 12 | 0 | 18 | 2 | 2-18 | 9.00 | 0 | 0 | 6.00 | 9.00 |
| 2018-19 | (United Arab Emirates) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2019 | (West Indies) | 38 | 0 | 58 | 2 | 2-16 | 29.00 | 0 | 0 | 19.00 | 9.15 |
| 2019-20 | (New Zealand) | 42 | 0 | 50 | 1 | 1-18 | 50.00 | 0 | 0 | 42.00 | 7.14 |
| 2020-21 | (New Zealand) | 22 | 0 | 40 | 1 | 1-12 | 40.00 | 0 | 0 | 22.00 | 10.90 |
| 2021-22 | (New Zealand) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2022-23 | (New Zealand) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2023-24 | (New Zealand) | | 0 | 0 | 0 | | | | | | 0.00 |